docs(self-managed): add download link for Docker Compose

[aabouzaid]

Description

As we move away from cloning repos to using artifacts, I added the download link for Docker Compose.

When should this change go live?

• This is a bug fix, security concern, or something that needs urgent release support.
• This is already available but undocumented and should be released within a week.
• This on a specific schedule and the assignee will coordinate a release with the DevEx team. (apply hold label or convert to draft PR)
• This is part of a scheduled alpha or minor. (apply alpha or minor label)
• There is no urgency with this change and can be released at any time.

PR Checklist

• My changes are for an already released minor and are in /versioned_docs directory.
• My changes are for the next minor and are in /docs directory (aka /next/).

• My changes require an Engineering review, and I've assigned the Engineering DRI or delegate.
• My changes require a technical writer review, and I've assigned @camunda/tech-writers as a reviewer.

[aabouzaid]

@camunda/tech-writers, do we have a function that resolves the version of the docs so there is no need to update the links for every release?

Something like this (or so):

https://github.com/camunda/camunda-self-managed/releases/download/docker-compose-<DocsVersion/>/docker-compose-<DocsVersion/>.zip

[mesellings]

Approved, great work - just one suggestion for rewording 👍

[aabouzaid]

@mesellings Thanks for the review 🙌

If there is no function that resolves the version, I can try to create one.

[mesellings]

@mesellings Thanks for the review 🙌

If there is no function that resolves the version, I can try to create one.

@aabouzaid I would liaise with @pepopowitz before spending any time on this 👍

[conceptualshark]

Thanks for the follow-up! 🙌

@aabouzaid Re: the release link, there is an ongoing discussion in Distro on how to handle this for C8Run, which has the same issue - I think this could likely be handled there (pointing to latest or similar), as opposed to a docs-side fix.